bennett



" 1o p p I structure being snch thet tools oi: chfierent Reissnecl Apr.9, v i

d igiimi No. 1,601,669, dated" September 23, ISZGQSe'iial mi. 102,727,filed April 17-, 1926. Application 1 1 T001. HOLDER. I

"reissue filed Mairc1r28y1927. Serial No. 179.170.

. Thisfinvention relates to h tool holders or bars for lath s and hasfor an in'iportant object thereof the provision of a device in the Iuseof which exchange of tools is facilitated.

invention isto provide a device of this character l'jiaving controllingtappets, one of which may be struck 'vvlth a h'annner'te [tighten the'tool iii position andjtheother of whichiinayhe struck to release thetooLthe sizes or Widths m be accommodated;

- strnctionshown inthe accompanyingdravving, wherein for the purposeoi:t' lhistratlon ,is shown a:preferredeinhodiniient. of my in takenthrough the Wedge blocks. I

5 upper end-of the head 11.

ing" a" reduced npper end portion 21 of'the ventionandwherein:

Fig.1 is a plan View eta tool holder con' etructed in" accordance Witirny invention.

{Fig.2 isa sectionoi'i'the'line ofFi 1. ,Fig.-3 asection on the line3'-3 of Fig.2.

Fig; i is'a combined vertical.sectional View Referring new more"particnlarly to i lrraznged ivithin the horesf and 16 re spectivelyareplungers-"l'i and 18, eachirrged upwardly by. a Spring 19 and eachlimited in I its upwardnioveinent a 0011211720 snrronnct plunger.'lhe-plnnger .17 has. that face thereof nextladjacent the tool jopening;12 beveled" downwardly; as indicated at 22 While the cor responding facecram plunger 18 is heveled Upwardly, es iiidicated at23. the inner endcrew bore I' L-is arranged a edge block p '24,"onefa.ce or Whichisshaped to engagethe fel'ed for" eoaction with the beveled" face 22 ortool. 13ivhile 1 the opp ositeface thereof is bevthe pIImQer In'thatportion otthehore 14 lying between the" vertical bores 15* and 16 ispositioned a wedge block.25*having one facefthereof arcuatelycnrved, as,at fol-en .sgageinent Withtl'ieplnnger 17 and the" oppositefacethereofibeveled, as $11127, for engage ment "Wliih the beveled facetit ot the plunger 1 A-ierther and more speciiic'object .ofthe thedrawing; the nninera1 10 generally designates I a toolbar having a headll provided with an tool 13." The here 14 mm, "tially interceptingthetool receiving openi ng 12 an d-thisboit'e isin turn intersectedihy verg1 through, the

thense ofthe device, the t0ol 13'fi's inserted inv theopening 12 andtighten ed by tapping upper end of the plunger'l'i with a hammer ortheliike." Thistapping forcesthe plunger 17} downwardly and accordinglymoval 01' adjustment, the upper end of the,

plunger 18 is tapped with a hammer, permit ting the Wedge block 25 tomovelongitudinah p ly and free the plunger 17Isothatit' inoves Theseandother objects I attain. by theconupwardly under the influence of itsspring and the releasing: position.

It vvil1 he oliviousthat of this character inay be veryreadily andcheaply produced and Will provide an 'effective nieans tor 'rapldlyinserting or removing a tool in structure thereof is capable of acertain range of "change and modification withoiit mate "riallydeparting from the spirit of the inven tion andI accordii'lgly do notlimit myselfto such epeci'licstrnctnreexceptas hereinafter.

claimed, I

claim as my" invention: 1-2111 a tool holderfo'r Iathes; a tool herhere, ata'ppet having one face coactji ngwith tudinally of the boreinadirection away from'the tappet and urging the inernloer .into

engagement with the tappet. f r

Y 2 In a 'tool holder fo r lathes,- having a'headj provided ithmtoolreceiving opening andfhaving a horepartially inter- I cepting the toolreceiving opening. tool contacting Wedge block arranged" Within thebore, a tappet having one face coaoting with the Wedge block andnormally spring urged to a position releasing the wedge block fronl,

, engageinentwith the tooLa inernber movable longitudinally of the boreengaging the opposite face-ofthe tappet, and means normaL 1y preventinmoveinent ofthe member longi permits the Wedge block. 24; toshift to?loiiigitndinally of the bore engaging'theop tool bar having ahead'provided with a toolreceiv- I ing'opening and having a bore partially in;.tefrceptingthe toollreceiving opening, a. tool: v contacting 1 wedgblock arranged 7 ithin the r the wedge bloek and'norinallyspring urged 1position releasingthe Wedge" block from" Y 1y preventing inovementoftheineinberlongif the first named tappet.

tudinally of the bore in a direction away from the tappet comprising asecond tappethavirig a wedging engagement with said member.

3. In a tool holder for lathes, a tool bar having a head provided with atool receiving opening and having a bore partially intercepting the toolreceiving opening, a tool contacting wedge block arranged within thebore, a tappet having one face coacting with the wedge block andnormally spring urged to a position releasing the wedge block from aspring normally urging the second tappet in a direction shifting themember toward 4. In a tool holder for lathes, a tool bar havmg a headprovided with a tool receiving opening and having a bore partiallyintercepting the tool receiving opening, a tool contacting wedge blockarranged within the bore, a tappet having one face eoacting with thewedge block and normally u ged to a position releasing the wedge blockrrom engagement with the tool, a member movable longitudinally of thebore engaging the opposite face of the tappet, means normally preventingmovement of the member longitudinally of the bore in a direction awayfrom the tappet comprising a second tappet havmg a wedging engagementwith said member,

and a spring normally urging the second tappet in a direction shiftingthe member toward the first named tappet, the heads of said tappetsbeing disposed at one side of the head of the bar to ermit en a ementtherewith of,

animpact tool. V 5,. A ljocking'device for clamping a primary member toa secondary member, com- 7 prising: a clampingwedge movable in saidprimary member, the pressure exerted by oneside of said clamping wedgebeing directed against sa1d secondary member in such a manner astofrietionally bind same; a releasin I if wedge through wh1ch thepressure exerted by the other side of sa1d clamping wedge is exertedagainst said primary member, saidreleasing wedge being operable torelease said clamping wedge and relieve the pressure directed againstsaid secondary member; and a pressure transm1tt1ng block situatedbetween said clamping wedge and said 1 91630 ing Wedge and so mounted insaid primary member thatitis. free to move substantially along the lineof pressure which it transmits from one of said wedges to the other.

6. A locking device, for clamping a primary member to asecondary member,comprising: a clamping wedgemovable in said primary member, the pressureexerted by one side of said clamping wedge being directed against saidsecondary member in such a manner as to frictionally bind same; a springacting against said clamping wedge-in such a manner as to tend to moveit out of its operative position, said spring being of insuflicientstrength to so move said clamping wedge when full pressure is beingexerted thereby; a releasing wedge through which the pressure exerted bythe other side of said clamping wedge is exerted against said primarymember, said releasing wedge being operable to release said clampingwedge and relieve the pressure directed against said secondary member;and a pressure transmitting block situated between said clamping wedgeand said releasing wedge and so mounted in said primary member that itis free to movesubstantially along the line of pressure which ittransmits from one of said wedges to the other.

7. A locking device for clamping a primary member to a secondary member,comprising: a clamping wedge movable in said primary member, thepressure exerted by one side of said clamping wedge being is directedagainst said secondary member insnch a mannerasto frictionallybind same;a releasing wedge through which the pressure exerted by the other sideof said clamping wedge is exerted against said primary member, saidreleasing wedge being operable to release said clamping wedge andrelieve the pressure di rected against said secondary member; a springacting against, said releasing wedge andtending to move it into aposition to assume said pressure; and a pressure transmitting blocksituated between said clamping wedge and said releasing wedge and somounted in said primary member that it is free to move substantiallyalong the line ofpressure which it transmits from one of said wedges tothe other.

8. A locking device for clamping a primary member to a secondary member,comprising: a clamping wedge movable in said prin'iary member, thepressure exerted by one side of said clamping wedge being directedagainst said secondary member in such a manner as to frictionally bindsame; a spring acting against said clamping wedge in such a man-1 ner asto tend to move it out of its operative position, sa1d spring being ofmsufiicient strength to so move said clamping wedge when full pressureis being exertedthereby a releasing wedge through which the pressureexerted by the other side of sa1d clamping wedge is exerted against saidprimary memher said releasin wed e bein o )erable to Y O z: a:

release sa1d clamping wedge and relieve the pressure dlrected againstsaid secondary member; a spring acting against said releaslng'wedge andtending to move it 111110 a posi tion to assume said pressure; andapressure t-ransmlttmg block sltuated between sa1d clamping Wedgeandsaid releasing Wedge andisomounted in said primary member that it isfree to move substantially along the line of pressure which ittransm'itsfrom one of said Wedges to the other. 1

9; A'locking device for clamping a primary membertoagsecondary member,comprising a. clamping edge movable in said primary me1nber; a'wedgeblock acted 'uponby one side ofsaidWedge-to apply pressure to said saidbaekingmeans being" operable to release said clamping Wedge and;relievelthe pressure directed agains laidsecondary n' ember. a a

'10; A locking device for clamping a primary member to a'secondarymember, com-- 7 prising-t afclamping,wedgemovable in said primary membera Wedge block acted upon one'sideyof said Wedge to zipplypressure tosaid;secondary member, said \vedge block ;beingso mount 7 I that it'iscons aine'd 'toi'move substantially along theii lin 0" said p11 (1' in 1said primary member ing against said clamping Wedge in. such a manner totend tomove :it' out oiiits opera gainst said nary member to a secondaryniembericoms "to a being ng a clamping ivedgel m'ovable in said by oneside ofisaid wedg secondary member;

,o mounted In said nrimary member toapply pressure t liat' it is colistlirainedj to move substantially along the 1 of saidpr'essure';a-spring actmg against'said clamping wedgelin such a manner asto tend.to moveit out of tsoperative' position, said sprmg being ofIIISLIlfiCIGIIlZ stlir'en gth .to so i move said "clamping Wedge whenfullpressure is being exerted thereby and" a releasing Wedge throughwhich the I pressure exerted .bytheyotlieimside of said clan'iping Wedgeis exerted against" said priinary member,"jsaid\ releasing Wedge beingoperable to release said clamping wedgeandi v [rehe'vethe pressuredirected. against said seci ondary member 12. A lockingg deviceforclamping a pri against said secondary member; and a spring (secondaryme1inber,' said wedge block being so mounted insaid primarymember thatit is constrained to move substantially alongthe line of said pressure;and a j backing means against which thep'ressure exerted by the;Other-sic e ofsaid clamping Wedge isdirected;

ssure a. spring acting Wedgeand tending to move it into a posil p ptionto assume'said pressure.

ing operable to" release saidclampmg Wedge and:

" "11. "A locking deviceforrlamping a priblock acted upon- :aid Wedgeblock ingwedge andiso mounted in said primary that is constrained movesubstantially acting. against said releasing wedge and tending to moveit into a position to assumesaid pressure. 7 l 13. A locking device iiorclamping a primary member to a secondary member; comprising z a clampingwedge movable'i-nsaid v primary member; a Wedgeblockactedupon by "oneside of said Wedge to apply pressure to said secondary member said edgeblock beingso-mounted in said primary member thatit' is constrained tomove substantially along the line'of said pressure ;"a spring act-' ingagainst said'clamping Wec lgein, such a' manner as to tend to moveitoutzof its operative Position, said spring being otinsuflicientstrength to so jmove' said clamping wedge when iullpressure is beingexerted thereby va releasingwedge'throughwhich the pressure exerted bytl1e'other slide of said clamping edge isiexert'ed against said primarymem; beryl-said releasmgwedge bemg'operable to releasesaidclamping\vedgeand relieve the pressure directedagainst said secondary inemher;and a spring actn'lg againstsaid releasa 7 1414A locking device'forclampinga prid n'ia-ryflmember to a secondary, member coni prisingi aclamping Wedge movable in said i primary member; a 'Wedge'blockactedupon by one side of said. Wedge to apply pressure said secondary member,saidwedge block being so n'iounted in saidfprimary member that it isconstrained'toimove substantially along the line of saidpressui a; areleasing vedge through which-the pressure exerted by the other side ofsaid clamping wedgeflis exerted against said primary member, saidreleasing Wedge being operable to release said clamping; Wedge andrelieve the pressure di rected against said. secondary member; andapre'ssure transmitting; block situated be tween said clamping Wedge'andsaid releasniember that it'is' free to move substantially along the hueof; pressure whlch. ittransmits from one of said wedges to the other.

; 15. A lockingdevice for clamping a pri- 1 marywmember to secondarymember, comprising: clamping Wedge-movable in said primary member; aWedge blockacted upon by one side of said'wedge to apply pressure i tosand secondary member, sald wedge block being, so mounted nSil-ltljjlllflillY member along the line of said pressure; a springacting against said clamping wedge in such a manner as to tend to moveit out of its operative position, said spring being of insufficientstrength to so move said clamping wedge when full pressure is beingexerted thereby; a releasing Wedge through which the pressure exerted bythe other side of said clamping wedge is exerted against saidpripressure which it transmits from one of said wedges to the other.

16. A locking device for clamping a primary-member to a secondarymember, comprising: a clamping wedge movable, in said primarymember; aWedge block acted upon by one side of said wedge to apply pressure tosaid secondary member, said wedge block being so mounted in said primarymember that it is constrained to move substantially along the line ofsaid pressure; a releasing wedge through which the pressure exerted bythe other side of said clamping wedge is exerted against said primarymember, said releasing wedge being operable to release said clampingwedge and relieve the pressure directed against said secondary member; aspring acting against said releasing wedge I and tending to move it intoa position to assume said pressure; and a pressure transmit ting blocksituated between said clamping wedge and said releasing-wedge and, so

mounted in said primary member that it is free to move substantiallyalong the line of pressure which 1t transmits from one of said wedges tothe other.

17 A locking device for clamping a primary member to a secondary member,comerative position, said spring being of in'sufficient strength to somove said clamping wedge whenfull pressure is being exerted thereby; areleasing wedge through which the pressure exerted by the other side ofsaid clamping wedge is exerted againstsaid primary member, saidreleasing wedge being,

operable to release said clamping wedge and relieve the pressuredirected against said secondary member; a spring acting against saidreleasing wedge and tending to move it into a position to assume saidpressure; and a pressure transmitting block situated between saidclamping wedge and said releas ing wedge and so mounted in saidprimarymember that it is free to move substantially along the line ofpressure which it transmits from one of said wedges to the other.

18. A locking device for clamping a primary member to a secondarymember, comprising: a clamping wedge movable in said primary member, thepressure exerted by one side of said cls'imping wedge being directedagainst said secondary member in such a manner as to frictionally bindsame; and means against which is directed the pressure exerted by theother side of said clamping wedge, said means being operable to releasesaid clamping wedge andrelieve the pressure directed against saidsecondary member, said means and said clamping wedge being held in saidprimary member when in releasing position.

In'testimony whereof, I have hereunto subscribed my name at Los Angeles,California, on the 18th day of March, 1927. r

a. p CLAUDE W. BENNETT.

